I need help with (b): A small company with 5 employees wants to know some statistics about their employee's ages. They surveyed the 5 employees and found that their ages were: 22, 29, 35, 37 and 42.

Question

I need help with (b):  A small company with 5 employees wants to know some statistics about their employee's ages.  They surveyed the 5 employees and found that their ages were:  22, 29, 35, 37 and 42.  
(a)Determine:
Mean age:  33
Median:  35
Range:  20
Variance:  59.5
S.D.:  7.72
(b) How would your answers change if this was a sample of 5 employees from a company of 10,000?  I believe it would not change the answers.

bobpursley · Answer

Your SD is the sample SD. Your population SD is 6.90. How does it change if population larger, and sample size stay at 5? Does not change.